i searched and couldnt find an exact answer.

I have a friend thats offering me his apexi downpipe for free (who can say no??). i searched and its a 2.5" inlet and about a 2.8" outlet.

so my question is, will this bolt up to a buschur 3" HFC?

in MAP's site it says that the downpipe necks down at the o2 housing but immediately goes to 2.8" the rest of the way. is not a direct bolt on to stock cat, but will bolt up to an apexi exhaust.

that wasnt much help... anyone know if it will without modification of the flange?